Question

The coefficient of friction between a tire and dry asphalt is 0.7. For a car with...

The coefficient of friction between a tire and dry asphalt is 0.7. For a car with mass of 1700 kg and an initial speed of 31 mph:
(A) Calculate the magnitude of the friction force on the car. Assume the road is flat (i.e. is not inclined at an angle).

(B) Calculate the distance the car will slide when coming to rest.

(C) Calculate the time the car will take to slide to rest.

(D) If the speed of the car is doubled, calculate the distance the car will slide when coming to rest.

(E) If the speed of the car is doubled, calculate the time the car will take coming to rest.

(F) If the skid marks a car leaves when it is braking are 33.6 m long, calculate the initial speed of the car. Assume the car comes to rest.

(G) If the coefficient of friction between a tire and wet asphalt is 0.4 and the car is moving at 31 mph, calculate the distance the car will slide when coming to rest.

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comment in case any doubt.. goodluck

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